A SURGICAL INSTRUMENT

摘要

A surgical instrument comprises a probe (3) including an elongate hollow outer member (14) having a cutting window (16) at its distal end portion. An elongate drive shaft (15) is disposed within the outer member (14) and is mounted for rotation about its longitudinal axis within the probe. A cutting tool (17) is located at the distal end of the drive shaft, and is positioned adjacent to the cutting window (16). An indicia in the form of an etched marking (18) runs proximally along the outer member (14) in alignment with the center of the cutting window (16). The indicia allows the user of the instrument to ascertain the position of the cutting window (16), whatever the orientation of the probe (3).